- ICH GCP
- Register voor klinische proeven in de VS.
- Klinische proef NCT07618689
Proximal Nerve Cryoablation Versus Perineuroma Cryoablation for Chronic Neuroma Pain After Combat-Related Amputation (AXON-FREEZE)
atients with combat-related amputations frequently develop chronic neuroma pain that interferes with rehabilitation, prosthesis use, mobility, sleep, and quality of life. Cryoablation is a minimally invasive treatment that produces controlled nerve injury using extreme cold. Although the freezing effect is localized around the cryoprobe, axonal interruption followed by distal Wallerian degeneration may extend functional denervation distal to the ablation site.
This study aims to compare two ultrasound-guided cryoablation strategies for chronic neuroma pain after combat-related amputation: cryoablation performed directly near the neuroma and cryoablation performed proximal to the neuroma along the affected nerve.
The study will evaluate whether proximal nerve cryoablation produces greater or longer-lasting analgesic effects compared with perineuroma cryoablation.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
Chronic neuroma pain is a common and disabling complication following combat-related limb trauma and amputation. Persistent neuroma pain may contribute to residual limb pain, phantom limb pain, impaired prosthesis tolerance, reduced mobility, sleep disturbance, and decreased quality of life. Current treatment strategies frequently provide incomplete or temporary analgesia.
Cryoablation is an ultrasound-guided minimally invasive technique that induces controlled axonal injury using extreme cold temperatures. Although the direct freezing zone extends only a few millimeters around the cryoprobe, cryo-induced axonotmesis may trigger distal Wallerian degeneration along the affected nerve pathway while preserving connective tissue structures that support potential nerve regeneration.
The optimal anatomical target for cryoablation in painful neuromas remains unclear. Cryoablation performed directly adjacent to the neuroma may interrupt local nociceptive signaling, whereas proximal nerve cryoablation may produce broader distal analgesic effects by interrupting axonal conduction proximal to the neuroma-bearing segment.
The AXON-FREEZE Trial is a prospective multicenter controlled study designed to compare proximal nerve cryoablation versus perineuroma cryoablation for chronic neuroma pain after combat-related amputation.
Participants with ultrasound-confirmed painful neuromas will undergo ultrasound-guided cryoablation using one of the two treatment strategies according to study allocation and local clinical practice. Clinical follow-up will include assessment of neuroma pain intensity, neuropathic pain characteristics, phantom limb pain, residual limb pain, prosthesis tolerance, analgesic consumption, patient-reported improvement, and adverse events.
The study aims to improve understanding of cryoablation targeting strategies and evaluate whether proximal nerve cryoablation may provide stronger or longer-lasting pain relief compared with cryoablation performed adjacent to the neuroma.
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studiecontact
- Naam: Dmytro Dmytriiev, PhD.Professor
- Telefoonnummer: +380674309449
- E-mail: mddmytriiev@gmail.com
Studie Locaties
-
-
Вінницька
-
Vinnytsia, Вінницька, Oekraïne, 21000
- Vinnitsya university hospital
-
Contact:
- Dmytro Dmytriiev, Phd
- Telefoonnummer: 0674309449
- E-mail: mddmytriiev@gmail.com
-
-
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- Age ≥18 years
- Combat-related limb amputation
- Chronic neuroma pain lasting ≥3 months
- Ultrasound-confirmed painful neuroma
- Average pain intensity ≥4/10 on Numeric Rating Scale
- Positive Tinel sign
- Ability to undergo ultrasound-guided cryoablation
- Stable analgesic regimen for at least 14 days
- Ability to provide written informed consent
Exclusion Criteria:
- Active infection at the treatment site
- Open wound preventing safe procedure
- Previous cryoablation of the target nerve within 6 months
- Neuroma surgery within 3 months
- Severe coagulopathy or anticoagulation contraindicating procedure
- Pregnancy or breastfeeding
- Severe uncontrolled systemic disease
- Inability to complete follow-up assessments
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Niet-gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Enkel
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: Perineuroma Cryoablation
Ultrasound-guided cryoablation performed adjacent to the painful neuroma.
|
Ultrasound-guided cryoablation performed adjacent to the painful neuroma.
|
|
Actieve vergelijker: Proximal Nerve Cryoablation
Ultrasound-guided cryoablation performed proximal to the neuroma along the affected nerve.
|
Ultrasound-guided cryoablation performed proximal to the neuroma along the affected nerve.
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Change in Chronic Neuroma Pain Intensity
Tijdsspanne: Baseline to 12 weeks
|
Change in average neuroma pain intensity measured using the Numeric Rating Scale (NRS).
|
Baseline to 12 weeks
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
DN4 neuropathic pain score
Tijdsspanne: : Baseline to 24 weeks
|
Assessment of neuropathic pain characteristics using the Douleur Neuropathique 4 (DN4) questionnaire.
Higher scores indicate greater neuropathic pain involvement associated with chronic neuroma pain after combat-related amputation.
|
: Baseline to 24 weeks
|
Medewerkers en onderzoekers
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
- Pijn
- Neurologische manifestaties
- Ziekten van het zenuwstelsel
- Wonden en verwondingen
- Postoperatieve complicaties
- Pathologische processen
- Neoplasmata
- Neuromusculaire aandoeningen
- Ziekten van het perifere zenuwstelsel
- Neoplasmata per histologisch type
- Neurologische gedragsmanifestaties
- Neoplasmata, zenuwweefsel
- Trauma, zenuwstelsel
- Zenuwschede neoplasmata
- Perceptuele stoornissen
- Pijn, postoperatief
- Pathologische aandoeningen, tekenen en symptomen
- Tekenen en symptomen
- Zenuw degeneratie
- Neuroma
- Perifere zenuwbeschadigingen
- Fantoom ledemaat
- Wallerian Degeneration
Andere studie-ID-nummers
- 10v213022026
- USRA (Andere identificatie: Ukranian Society of Regional Anesthesia and Pain Therapy)
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Beschrijving IPD-plan
IPD-toegangscriteria voor delen
IPD delen Ondersteunend informatietype
- LEERPROTOCOOL
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .